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OFFICIAL ANIMAL IDENTIFICATION NUMBER (AIN) DEVICES

WITH THE “840” PREFIX

January 10, 2024

VISUAL AIN TAGS

The minimum standard for official identification of some species is a visual ear tag. For example, 

when using the 840 AIN for cattle, the minimum identification standard is the visual AIN ear tag.

Ear tags with the AIN are USDA official tags and are:

• Designed for one-time use (tamper evident)

• Imprinted with:

- AIN (15-digit numberstarting with 840)

- Official Ear tag Shield

- Unlawful to Remove

- Manufacturer’s Logo or Trademark (printed or impression of)

Figure 1: The official ear tag shield is the U.S. Route Shield graphic with “U.S.” or the State postal abbreviation or Tribal alpha 

code imprinted within the shield.

For describing 2-piece tags, the designation of “Tag Piece A” is the piece attached to the inside of 

the animal’s ear (visual from the front of the animal). “Tag Piece B” is the piece attached to the 

outside of the animal’s ear (visual from behind the animal). Imprinting the AIN on Tag Piece A is 

required; imprinting the AIN on Tag Piece B is optional. When the AIN is imprinted on Tag Piece 

B, the tag set is packaged in containers or trays to keep both tag pieces together as a pair before 

being applied.

AIN RADIO FREQUENCY IDENTIFICATION (RFID) DEVICES

AIN ear tags with radio frequency identification (RFID) technology are also available and are 

readable visually and electronically. The RFID transponder, in these options, is encased in the visual 

tag. Tags with RFID technology (referred to as AIN RFID tags) must have all 15 digits of the AIN 

printed on the tag piece that contains the transponder. The Official Ear tag Shield and text,
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“Unlawful to Remove” must be printed on the other piece. AIN RFID tags are recommended to be 

placed in the left ear but may be placed in either ear.

RFID injectable transponders are also available with the AIN number for certain species including 

equids, sheep, and goats.

PAIRED AIN TAGS

AIN tags may be obtained in pairs consisting of two visual tags or one AIN RFID tag with a visual tag. 

In such cases, the same AIN is imprinted on both tags. Contact the tag manufacturer to obtain 

more information on this option.

Figure 2: Image of calf with paired visual and RFID tags

OBTAINING AND USING AIN TAGS

AIN tags are manufactured only by the authorized tag manufacturers listed on the following 

pages. AIN tag managers representing AIN tag manufacturers provide AIN devices to producers 

or individuals responsible for identifying the animals. Contact the AIN tag manufacturer for 

information on the AIN device/tag managersin your area. Producersshould notsell, loan, or give 

tags they have purchased to other producers, because all AIN tags they have purchased are 

recorded as being distributed to them using the location identification system used by their State.

See the “Official Ear tags– Criteria and Options” document for more information on, and 

examples of, official identification ear tags:

http://www.aphis.usda.gov/traceability/downloads/ADT_eartags_criteria.pdf.
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AllflexUSA, Inc.

P.O. Box 612266 2805

East 14th Street

Dallas Ft. Worth Airport, TX 75261-2266

Toll Free: (800) 989-TAGS [8247]

Phone: (972) 456-3686

Fax: (972) 456-3882

www.allflexusa.com

Table 1: Allflex 840 Visual Tags

Tag Name Type AIN Product Code Species

1. Allflex Ultra Maxi Visual Panel Ear tag AIN 0020b Bison, Cattle, Deer/Elk

2. Allflex Ultra Large Visual Panel Ear tag AIN 0021b Bison, Cattle, Deer/Elk

3. Allflex Ultra Junior Visual Panel Ear tag AIN 0022 Bison, Cattle, Deer/Elk

4. Allflex Integra 

Male/Tamper

Visual Panel Ear tag AIN 0043 Pigs

5. Ultra-Small Female,

Small male

Visual button ear tag AIN 0070 Bison, Cattle Deer/Elk, Pigs

Table 2: Example Images of Allflex 840 Visual Tags

Note tag photos are not in proportion to actualsize.

1. 2. 3.

4. 5.
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ALLFLEX USA, INC. (CONTINUED)

Table 3: Allflex 840 RFID Tags

Tag Name Type AIN Product Code Species

1. HDX High Performance 

Ultra EID

RFID Button

Eartag

AIN 0004d Bison, Cattle, Deer/Elk, Pigs

2. FDX Plus Ultra EID Tag RFID Button

Eartag

AIN 0016f Bison, Cattle

3. “All in One” FDX Plus EID 

Tag

RFID

Panel 

Eartag

AIN 0017c Bison, Cattle, Deer/Elk

4. “All in One” High 

PerformanceHDX Tag

RFID

Panel

Eartag

AIN 0018c Bison, Cattle, Deer/Elk

5. Combi E23 Button 

Eartag- HDX

AIN 0058b Sheep/Goats

6. FDX miniV Button Eartag AIN 0061b Sheep/Goats

7. “All in One” 

FDX+Ultra EID-Lg

RFID

Panel

Eartag

AIN 0078c Bison, Cattle

8. “All in One” HDX 

Ultra EID-Lg

RFID

Panel 

Eartag

AIN 0079c Bison, Cattle

9. Integra Male RFID Button 

w/rectangular 

male

- FDX

AIN 0080 Bison, Cattle, Deer/Elk, Pigs

10. HDX High Perf. UltraEID w/Integra MaleRFID Button 

w/rectangular

male

AIN 0084 Bison, Cattle, Deer/Elk, Pigs

11. HDX High Perf. UltraEID w/Global Hog MaleRFID Button 

w/rectangular 

male

AIN 0085 Bison, Cattle, Deer/Elk, Pigs, 

Sheep/Goats

12. B4S/N15 RFID Button w/ 

small panel 

male

- FDX

AIN 1000Pa

SCR 1000Pa

Sheep/Goats

13. FDX LW Ultra RFID Button AIN 1000a 

SCR 1000a

Sheep/Goats
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AllflexUSA, Inc. (Continued)

Table 4: Example Images of Allflex 840 RFID Tags

Note photos are not in proportion to actualsize.

1. 2. 3. 4.

5. 6. 7. 8.

9. 10. 11. 12.

13.
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AllflexUSA, Inc. (Continued)

Table 5: Allflex 840 RFID INJECTABLE TRANSPONDER

Tag Name Type AIN Product Code Species

1. Allflex Global Ident 

Microchip

Injectable Transponder -

FDX

AIN 0036 Equine, Deer/Elk

Table 6: Example Image of 840 RFID INJECTABLE TRANSPONDER

Note photos are not in proportion to actualsize.

1.
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Alliance ID

720 W. 21st Avenue

Covington, LA 70433

Phone: (985) 898-0811

www.microchipidsystems.com

Table 7: Alliance 840 RFID INJECTABLE TRANSPONDERS

Tag Name Type AIN

Product Code

Species

1. 840 ID Microchip Injectable Transponder -FDX AIN0082 Equine, Deer/Elk

2. 840 ID Mini-microchip Injectable Transponder – FDX AIN0081

SCR 0101

Equine, Deer/Elk

Sheep/Goat

Table 8: Example Images of Alliance 840 RFID INJECTABLE TRANSPONDERS

Note photos are not in proportion to actualsize.

1. 2.
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AVID Identification SystemsInc. 

3185 Hammer Avenue

Norco, CA 92860-1983

Marketed by: EZid Livestock 

Identification

Greeley, CO Phone: (970) 351-7701

Toll free: (877) 330-3943

Fax: (970) 351-7711

www.ezidavid.com

Table 9 : AVID 840 RFID INJECTABLE TRANSPONDER

Tag Name Type AIN

Product Code

Species

1. EZID

Transponder

Implant

Injectable 

Transponder

- FDX

AIN 0019 Deer/Elk, Equine

Table 10: Example Image of AVID 840 RFID INJECTABLE TRANSPONDER

Note photos are not in proportion to actualsize.

1.
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Datamars, Inc.

1110 Industrial Blvd

Temple, TX 76504

Phone: (254) 598-3440

www.datamars.com

Table 11: Datamars 840 RFID INJECTABLE TRANSPONDERS

Tag Name Type AIN

Product Code

Species

1. Equine Slim Microchip 

(T- SL 8010)

Injectable 

Transponder

- FDX

AIN 0086 Equine, Deer/Elk

2. Sheep/Goat 

SlimMicrochip

(T-SR 8010)

Injectable 

Transponder

- FDX

SCR 0103 Sheep/Goat

Table 12: Example Image of a Datamars 840 RFID INJECTABLE TRANSPONDER

Note photos are not in proportion to actualsize.

1.
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Table 13: Datamars 840 VISUAL TAGS

Tag Name Type AIN

Product Code

Species

1. Herdsman Small Visual Panel Eartag AIN 0032 Bison, Cattle, Deer/Elk, Pigs

2. Herdsman

Medium

Visual Panel Eartag AIN 0033 Bison, Cattle, Deer/Elk, Pigs

3. Herdsman Large Visual Panel Eartag AIN 0034 Bison, Cattle, Deer/Elk, Pigs

4. F6S Medium Visual 

Panel

AIN 0071b Bison, Cattle, Deer/Elk

5. F10S Large Visual Panel AIN 0072b Bison, Cattle, Deer/Elk

Table 14: Example Images of Datamars 840 VISUAL TAGS

Note photos are not in proportion to actualsize.

1. 2. 3.

4. 5.
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Datamars, Inc. Continued Phone: (254) 598-3440

 www.datamars.com

Table 15: Datamars 840 RFID Tags

Tag Name Type AIN

Product Code

Species

1. ComfortEar 

F105 FDX

Button Eartag ISO

-FDX

AIN 0035 Bison, Cattle, Deer/Elk, Pigs

2. ComfortEar

HDX Tag

Button Eartag ISO

-HDX

AIN 0059 Bison, Cattle, Deer/Elk, Pigs

3. ComfortEar 

F2SFDX

RFID Button AIN 0073 

AIN 0073b

Bison, Cattle, Deer/Elk, Pigs

4. ComfortEar 

F2SHDX

RFID Button

-HDX

AIN 0074 

AIN 0074b

Bison, Cattle, Deer/Elk, Pigs

5. ComfortEar 

F4ZFDX

RFID Button

-FDX

AIN 0075 Bison, Cattle, Deer/Elk

6. ComfortEar 

F4SHDX

RFID Button

-HDX

AIN 0076 Bison, Cattle, Deer/Elk

7. ComfortEar Slim 

F4ZFDX

RFID Button

-FDX

AIN 0075b Bison, Cattle, Deer/Elk

8. ComfortEar Slim 

F4ZHDX

RFID Button

-HDX

AIN 0076b Bison, Cattle, Deer/Elk
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Table 16: Example Images of Datamars 840 RFID Tags

Note photos are not in proportion to actualsize.

1. 3. 4. 4.

5. 6. 7. 8.
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Destron Fearing brand of Allflex

P.O.Box 612266 2805

E. 14th St.

Dallas-Ft. Worth Airport, TX 75261

Phone: (800) 328-0118

www.destronfearing.com

Table 17: Destron Fearing 840 VISUAL TAGS

Tag Name Type AIN

Product Code

Species

1. Large Visual Panel Eartag AIN 0024b Cattle

2. Extra Large Visual Panel Eartag AIN 0025b Cattle

Table 18: Example Images of Destron Fearing 840 VISUAL TAGS

Note photos are not in proportion to actualsize.

1. 2.
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Destron Fearing brand of Allflex (Continued) Phone: (800) 328-0118

www.destronfearing.com

Table 19: Destron Fearing 840 RFID TAGS

Tag Name Type AIN

Product Code

Species

1. Destron e.Tag Button Eartag

- FDX

AIN 0001b Bison, Cattle, Deer/Elk, Pigs

2. TSWP HD Set RFID Button with 

visual Panel 

Eartag

- FDX

AIN 0046 Bison, Cattle, Deer/Elk, Pigs

3. TSWPE Set RFID Button with 

visual Panel 

Eartag

- FDX

AIN 0047 Bison, Cattle, Deer/Elk, Pigs

4. Destron HD Set Button Eartag

- HDX

AIN 0060 Bison, Cattle, Deer/Elk, Pigs

Table 20: Example Images of Destron Fearing 840 RFID Tags

Note photos are not in proportion to actualsize.

1. 2. 3. 4.
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Destron Fearing brand of Allflex (Continued) Phone: (800) 328-0118

www.destronfearing.com

Table 21: Destron Fearing Injectable Transponder

Tag Name Type AIN

Product Code

Species

1. Equine 

Biothermo Lifechip

Injectable 

Transponder -FDX

AIN 0009b Equine, Deer/Elk

Table 22: Example Image of Destron Fearing Injectable Transponder

Note photos are not in proportion to actualsize.

1.
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Leader Products 

465HumeHighway

Craigieburn, VIC 3064 Australia

Phone: + 8 6 2 1 5 1 0 8 2 9 6 6

L e a d e r p r o d u c t s . c o m

Table 23: Leader Products RFID Devices

Tag Name Type AIN

Product Code

Species

1. Leadertronic HDX RFID Eartag - HDX AIN 0008 Bison, Cattle,

Deer, Elk, Pigs

2. Enviro Tag RFID Button- HDX AIN 0089 Bison, Cattle

Table 24: Example Images of Leader Products RFID Devices

Note photos are not in proportion to actualsize.

1. 2.
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ShearwellData Limited Putham, Wheddon

Cross Minehead, Somerset, TA24 7AS

Phone: +44 1643 841552

www.shearwell.co.uk

Table 25: Shearwell Data 840 Visual Tags

Tag Name Type AIN

Product Code

Species

1. Auto Set Visual Clip Tag AIN 0064

SCR 0098

Deer, Elk, Pigs

Sheep, Goats

Table 26: Example Image of Shearwell Data 840 Visual Tags

Note photos are not in proportion to actualsize.

1.
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ShearwellData Limited (Continued) Phone: +44 1643 841552

www.shearwell.co.uk

Table 27: Shearwell 840 RFID Tags

Tag Name Type AIN

Product Code

Species

1. Electronic Auto Set Clip Tag –

HDX

AIN 0063

SCR097

Deer, Elk, Pigs

Sheep, Goats

2. Shearwell Metal 

RFID Tag

Metal Clip Tag

- HDX

AIN 0090 Bison, Cattle

Table 28: Example Images of Shearwell 840 RFID Tags

Note photos are not in proportion to actualsize.

1. 2.
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Wuxi FOFIA Technology 

Co., Ltd.

4855 Bagley Terrace 

Drive, Alpharetta GA 

30004

Marketed by: All Data Tags, 

LLC https://alldatatags.com

Table 29: Wuxi FOFIA 840 RFID Tags

Tag Name Type AIN

Product Code

Species

1. HDX RFID Ear Tag RFID Button ear 

tag

AIN 0088 Bison, Cattle

Table 30: Example Image of Wuxi FOFIA 840 RFID Tags

Note photos are not in proportion to actualsize.

1.
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Y-Tex Corporation 

1825 Big Horn 

Avenue Cody, WY

82414

Phone: 307-587-5515

www.ytex.com

Table 31: Y-Tex 840 Visual Tags

Tag Name Type AIN

Product Code

Species

1. All

American 3 

Star TP

Visual Panel Eartag AIN 0068 Bison, Cattle, Deer/Elk

2. All

American 4

Star TP

Visual Panel Eartag AIN 0069 Bison, Cattle, Deer/Elk

Table 32: Y-Tex 840 Visual Tag Example Images

Note photos are not in proportion to actualsize.

1. 2.
Page 21

Y-Tex Corporation

(Continued)

Phone: 307-587-5515

www.ytex.com

Table 33: Y-Tex 840 RFID DEVICES

Tag Name Type AIN

Product Code

Species

1. Y-Tex

Round 

RFID Tag

RFID Button Ear tag

- FDX

AIN0007 (w/ Male 

Button)

Bison, Cattle, Deer/Elk, Pigs

RFID Button Ear tag

- FDX

RFID Button Ear tag

- FDX

AIN 0007b

(w/ Male Panel)

AIN 0007c (w/ Swine Star 

Male Panel)

Bison, Cattle, Deer/Elk

Pigs

2. All

American 

UHF 4 Star

UHF Panel Tag 

Ultrahigh

frequency

AIN 0044

(w/ Male Button)

Bison, Cattle, Deer/Elk

3. Y-Tex

Round 

RFID Tag

RFID Round Tag

- HDX

AIN0050 (w/ Male 

Button)

Bison, Cattle, Deer/Elk, Pigs

RFID Round Tag

- HDX

AIN 0050b

(w/ Male Panel)

Bison, Cattle, Deer/Elk

4. All American

3 Star

Matched Pair

Visual Panel Ear 

Tag w/ RFID 

Button – HDX

AIN 0028 (w/ Male 

Button)

Bison, Cattle, Deer/Elk

5. All American

4 Star

Matched

Pair

Visual Panel Ear

Tag w/ RFID ButtonHDX

AIN 0029 (w/ Male 

Button)

Bison, Cattle, Deer/Elk
Page 22

Table 34: Example Images of Y-Tex 840 RFID Tags

Note photos are not in proportion to actualsize.

1. AIN 0007

AIN 0007b

2. 3. AIN 0050

AIN 0050b

4. 5.